X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fcrypto%2Fshachain%2Fshachain.h;h=3f9dcf6a1716cc72e4a53fe35ad9b07e58348462;hb=7d1f0c73e4d321561abb74f82c8be97f10d69836;hp=8eabbab457a72b49c2c47736ce6e7d19f0b8fe82;hpb=8ad6ab9ce9b78c6b28b727b11d571d11856479c6;p=ccan

diff --git a/ccan/crypto/shachain/shachain.h b/ccan/crypto/shachain/shachain.h
index 8eabbab4..3f9dcf6a 100644
--- a/ccan/crypto/shachain/shachain.h
+++ b/ccan/crypto/shachain/shachain.h
@@ -6,13 +6,8 @@
 #include <stdbool.h>
 #include <stdint.h>
 
-/* Useful for testing. */
-#ifndef shachain_index_t
-#define shachain_index_t uint64_t
-#endif
-
 #ifndef SHACHAIN_BITS
-#define SHACHAIN_BITS (sizeof(shachain_index_t) * 8)
+#define SHACHAIN_BITS (sizeof(uint64_t) * 8)
 #endif
 
 /**
@@ -42,7 +37,7 @@
  *	shachain_from_seed(&seed, index--, hash);
  * }
  */
-void shachain_from_seed(const struct sha256 *seed, shachain_index_t index,
+void shachain_from_seed(const struct sha256 *seed, uint64_t index,
 			struct sha256 *hash);
 
 /**
@@ -55,10 +50,10 @@ void shachain_from_seed(const struct sha256 *seed, shachain_index_t index,
  * added.
  */
 struct shachain {
-	shachain_index_t min_index;
+	uint64_t min_index;
 	unsigned int num_valid;
 	struct {
-		shachain_index_t index;
+		uint64_t index;
 		struct sha256 hash;
 	} known[SHACHAIN_BITS + 1];
 };
@@ -79,7 +74,7 @@ void shachain_init(struct shachain *chain);
  * initialized chain), or one less than the previously successfully
  * added value.
  */
-shachain_index_t shachain_next_index(const struct shachain *chain);
+uint64_t shachain_next_index(const struct shachain *chain);
 
 /**
  * shachain_add_hash - record the hash for the next index.
@@ -106,7 +101,7 @@ shachain_index_t shachain_next_index(const struct shachain *chain);
  * }
  */
 bool shachain_add_hash(struct shachain *chain,
-		       shachain_index_t index, const struct sha256 *hash);
+		       uint64_t index, const struct sha256 *hash);
 
 /**
  * shachain_get_hash - get the hash for a given index.
@@ -121,6 +116,8 @@ bool shachain_add_hash(struct shachain *chain,
  *
  * Example:
  * #include <ccan/structeq/structeq.h>
+ * // Defines sha256_eq
+ * STRUCTEQ_DEF(sha256, 0, u);
  *
  * static void next_hash(const struct sha256 *hash)
  * {
@@ -132,10 +129,10 @@ bool shachain_add_hash(struct shachain *chain,
  *	else {
  *		struct sha256 check;
  *		assert(shachain_get_hash(&chain, index+1, &check));
- *		assert(structeq(&check, hash));
+ *		assert(sha256_eq(&check, hash));
  *	}
  * }
  */
 bool shachain_get_hash(const struct shachain *chain,
-		       shachain_index_t index, struct sha256 *hash);
+		       uint64_t index, struct sha256 *hash);
 #endif /* CCAN_CRYPTO_SHACHAIN_H */